Title:
DISK, DISK RECORDING DEVICE AND DISK REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP3225611
Kind Code:
B2
Abstract:
PURPOSE: To increase disk recording density by providing a disk in which clock phases of the signals between adjacent tracks are exactly coincided and a disk recording device which records signals so as to yield the disk.
CONSTITUTION: During a recording, data input signals 1 are temporarily written into a memory 8 through the use of reference clocks 2, a rotary encoder 5 detects a disk jitter, a clock reproducing circuit 10 obtains rotational synchronization clocks 9 which are phase synchronized to synchronous pulses 6 and the data are read from the memory 8 by the clocks 9. Thus, recorded signals 11, whose fluctuations are coincided with the rotational jitter of a disk 3, are obtained. The signals 11 are inputted to a laser modulation 12, a laser modulated light is obtained and is recorded on the disk 3 by an optical head 13.
Inventors:
Sei Furumiya
Application Number:
JP19938692A
Publication Date:
November 05, 2001
Filing Date:
July 27, 1992
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G11B7/00; G11B7/0037; G11B7/004; G11B7/005; G11B7/007; G11B19/28; G11B20/22; (IPC1-7): G11B7/007; G11B7/005
Domestic Patent References:
| JP6439631A | ||||
| JP1189070A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)